Improved mode of forming a steel surface on sheei



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JOSIAH W. ELLS, OF PITTSBURG, PENNSYLVANIA. Letters Patent No. 67,857, dated August 20, 1867.

IMPROVED MODE OP FORMING A STEEL SURFACE 0N SHEER-{AND BAR IRON.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOSIAH W. ELLs, of Pittsburg, in the county of Allegheny, and State of Pennsylv Vania, have invented a new and improved Method of Forming a Cast-Steel Surface on Sheets or'Bars of Wrought Iron; and I hereby declare that the following is a full, clear, and exact description thereof.

I take a, bloom" or bar-of wrought iron, previously brought to a welding heat, and while in that condition place it in aproperly-constricted flask or mould sufiiciently large to leave a small space between the two. Into this space I pour molten steel, which effects a perfect union with the hot iron fur supcrioi' to that brought about hypiny other means. As soon as the steel is set or become sufiiciently cool to bear removel froin the mould I -fi aishion the compound ingot so made into sheets orba'rs by rolling or hammering, as the case may require.

I claim the herein-described methocl of forming a cast-steel surface on bars or sheets of wrought iron.

JOSIAH W. ELLS.

Witnesses:

EB. WILLIAMS, Jr., JOHN MeKENNA. 

